Perforating apparatus



May 12, 1964 Filed Sept. 5, 1962 3 Sheets-Sheet l In ven tors FREDER/C'k\l. C. TURN'R BRIAN S. MASON F. J. L. TURNER ETAL 3,132,797 IPERFORATING APPARATUS By HAROLOflG. as ERLEY': 7 44%me May 12, 1964 F.J. 1.. TURNER ETAL 3,132,797

PERFORATING APPARATUS Filed Sept. 5, 1962 3 Sheets-Sheet 2 l n ven torsFRED'R/(K J- l. TURNER BRIAN S. MASON B H OLD G. ESE/Q45) orney May 12,1964 F. J. L. TURNER ETAL 3,132,797

PERFORATING APPARATUS Filed Sept. 5, 1962 3 Sheets-Sheet 3 InventorsFREDERICK d. L. TOR/V67? BRIAN S. MASON By meow a/tgqaaazer UnitedStates Patent f 3,132,797 PERFORATING APPARATUS Frederick James LeslieTurner, Brian Stanley Mason, and

Harold George Webberley, Croydon, Surrey, England,

assignors to Creed 8; Company Limited, Croydon, England, a company ofGreat Britain Filed Sept. 5, 1962, Ser. No. 221,482 Claims priority,application Great Britain Sept. 8, 1961 2 Claims. (Cl. 234110) Thepresent invention relates to improvements in perforating apparatus. Suchapparatus may be used for perforating the elements of a signalcombination in a tape.

Tape perforating apparatus is known in which a punch is provided forpunching a series of feed holes in a tape, and in which the teeth of asprocket wheel engage in the feed hole perforations to feed the tapepast a row of punches which perforate the tape in accordance with theelements of successive signal combinations. In such apparatus the feedhole punch is operated irrespective of whether the tape is being fed ornot and this results in unnecessary wear of the feed hole punch and die.

The present invention provides an arrangement in which the wear of afeed hole punch, and its associated die are reduced by effecting feedhole punching operations only at such times as the elements of a signalcombination rep resentative of a letter, figure or symbol are punchedinto a tape, or at such time that it is desired to effect feeding of thetape without perforating the tape with the signal combination elements.

According to one aspect of the invention therefore there is .providedperforating apparatus including a plurality of punches, a punchoperating member for each punch, means to move each of the saidoperating members into one of two positions, punch selecting means tohold the said members in one of the positions, and means to oscillatethe members about either of the positions.

According to a further aspect of the invention there is providedperforating apparatus including a plurality of punches, a punchoperating member for each punch, means for moving each punch operatingmember from one position to another including a crank member for eachpunch operating member, and a link member pivotally connectingrespective crank and punch operating members, punch selecting means foreach punch co-acting with the crank member particular thereto to holdthe associated punch operating member in one of the said positions, andmeans for pivoting one or more of the punch operating members held inthe said one position to cause a punch or punches to perform perforatingoperations.

An embodiment of the present invention is now to be described withreference to the accompanying drawings in which,

FIGS. 1 to 3 inclusive show side views of the operating mechanism for asingle perforating punch at various stages in a perforating operation,

FIG. 4 shows a side view of the operating mechanisms for a number ofperforating punches, and

FIGS. 5 and 6 show side views of a tape feeding mecha- -nism which isoperatively associated with the feed hole punching mechanism shown inFIG. 4.

Referring firstly to FIG. 1, the figure shows a side View 5 3,132,797Patented May 12., 1964 through which there extend, via bearingstherethrough, shafts 3 and 4 each of which is driven continuously in aclockwise direction, when the apparatus is operating by driving means(not shown). The shafts are arranged to rotate in synchronism and eachaccommodates thereon for rotation therewith a cam such as cam 5 on shaft3, and cam 6 on shaft 4. The profile of cam 5 is continuously engaged byrollers 7 and 8 on arms 9 and 10 respectively of a cam follower 11 whichis pivotally mounted on a spindle 12 affixed to the mounting plate 1. Anextending arm 13 of the cam follower 11 is pivotally linked by a pin 14to one end of a-member constituting a punch operating arm 15. The otherend of operating arm 15 isarranged to rest with its underside inengagement with a stop-pin 16 aflixed to the plate 1. The upper side ofthe latter mentioned end of punch operating arm 15 engages with theheaded lower end of a perforating punch 17 which is carried for verticalmovement in a punch stripper plate 18 and a die 19, and which is biassedto move vertically downward by a leaf spring 35, aflixed at one of itsends to the plate 1 and engaging the upper side of the headed lower endof the punch 17. The tape 20 is fed during punching operations betweenthe stripper plate 18 and the die 19 as shown in the direction indicatedby the arrow A.

The underside of the punch operating arm 15 is pivotally engaged at apoint intermediate its ends by one end of a link member 21. The otherend of link member 21 Q-pivotally engages one arm 22 of a crank memberconstituted by a bell-crank 23. This bell-crank 23 is pivotally mountedon a spindle 24 aflixed to the plate 1, and has a second arm 25extending therefrom to constitute the armature of an electromagnet 26which acts as means for selecting a particular punch for operation. Thesecond arm 25 is biassed to move in a direction away. from the core ofthe electromagnet 26 by a tension spring 27 which is coupled at its endsto the second arm 25 and to a pin 28 affixedto the plate 1. A settingarm 29 is pivotally mounted on the spindle 24 with a bent portion 30 atone of its ends engaging with the arm 22 of the bell-crank 23, and witha roller 31, rotatably mounted on a pin 32 at its other end, engagingwith the periphery of the cam 6. The

, setting arm 29 also incorporates a second arm 36, the

purpose of which is later to be described. The setting arm 29 is biassedto maintain the roller 31 thereon in engagetain the members biassed inthe same direction as they are biassed by the tension springs.

Operation .of the feed hole perforating mechanism is now to be describedwith reference to FIGS. 1, 2 and 3. I In FIG. 2 the tape 20 is fedbetween the punch stripper plate 18 and the die' 19 in the directionindicated by the iarrow A by a sprocket-wheel 61 the teeth of whichengagein feed hole perforations in the tape. Cams 5 and 6 are-rotatedin. synchronism in the direction indicated by the arrows inscribedthereon. Rotation of cam 5 causes the cam follower 11 to oscillate aboutthe axis of the spindle 12, and in its oscillation in the directionindicatedby the arrow B the end of the extending arm 13 of the camfollower is caused to move upward lifting the end of the punch operatingarm 15 to which it is pivotally attached. During this lifting operation,the other end of the punch operating arm continues to rest on the stoppin 16. Rotation of cam 6 in synchronism with cam 5 causes-the settingarm 29 to oscillate also about the axis of the spindle 24, and it is sotimed, in its os- 'tained against the core of the electromagnet.

cillation, to pivot in the direction indicated by the arrow C as theextending arm 13 on cam follower 11 moves to lift punch operating arm15. Pivoting of the setting arm 29, about the axis of spindle 24 in thelatter stated direction, and against the influence of tension spring 33causes the bent portion 30 thereof to engage the arm 22 of thebell-crank 23 which is then caused to pivot in the same directionagainst the influence of tension spring 27. At the end of the pivotingcycle, the link member 21 is positioned substantially vertically betweenthe punch operating arm 15 and the arm 22 of bell-crank 23 as shown, andthe arm 25 of the bell-crank 23 has moved into contact with the core ofelectromagnet 26. If at this stage of operation an electric currentsignal is applied to the winding of the electromagnet 26 to indicatethat a feed hole punching operation is to be effected, then the arm 25of bell-crank 23 is held by the core of the electromagnet 26 against theinfluence of the tension spring 27. Continued rotation of cam 6 causesthe setting arm 29 to pivot in the direction indicated by the arrow D(FIG. 3) under the influence of the tension spring 33 so that the bentportion 30 on the setting arm 29 is with drawn from engagement with thearm 22 of the bellcrank 23. Whilst pivoting of the setting arm 29 hasbeen taking place, synchronous rotation of cam with cam 6 has caused thecam follower 11 to pivot in the direction indicated by the arrow B FIG.3 to lower the :arm 13. However, due to the retention of bell-crank 23in the position to which it was pivoted and held by the energised coreof electromagnet 26, the link member 21, disposed between the arm 2-2 ofbell-crank 23 and punch operating arm 15, is maintained in a verticalposition. Maintenance of the link member 21 in this vertical positioncauses it to act as a fulcrum, and punch operating arm is caused topivot about the upper end of the link member 21 in the directionindicated by the arrow F as arm 13 of cam follower 11 moves down.Pivoting of the punch operating arm 15 causes the left hand end thereofin contact with the punch 17, to move the punch upward against theinfluence of leaf spring 35 to elfect punching of the tape as shown inFIG. 3.

Referring now to FIG. 2, continued rotation of earn 5 causes camfollower 11 to pivot in the direction indicated by the arrow B. -Inconsequence .cam follower 11 causesthe punch operating lever 15 to pivotin an anticlockwise direction about the upper end of link member 21whereupon the left hand end of the punch operating lever 15 is loweredto permit the punch 17 to move downward, clear of the tape under theinfluence of leaf spring 35. If at this stage the electromagnet 26 isde-energised to indicate that no further feed hole punching operation isto be elfected in the next operating cycle then the arm of thebell-crank will'no longer be re- When the bent portion of setting arm 29is pivoted anticlockwise with the setting arm by cam 6 under theinfluence of tension spring 33, bell-crank 23 is permitted to pivot inthe same direction under the influence of tension spring 27. The linkmember 2]. is therefore moved out of the vertical to the position shownin FIG. 1 and punch operating arm15 then pivots about pin '16 on whichits left hand end rests as it is oscillated by earn 5 through its punchoperating arms such as 15 all linked to the cam follower 11 which isarranged to be continuously engaged by the cam 5, link members such as21, and bell cranks Thus there are nine such as 23 biassed by springssuch as 27. FIG. 4 shows a side elevation of the tape perforatingapparatus proper catering for the nine punching positions. Thebell-cranks 23 are all pivotally accommodated on the spindle 24. Thenine punching positions may be considered as being in a line extendingin numerical order outward from the mounting plate 1 and of which thefeed hole punch position is the fourth of the nine positions.

At the position designated A, three electromagnets 26 are mounted sideby side, and at positions B, C and D elect-romagnets 26 are mounted inpairs. The three electromagnets at position A are particular to thepunches at the first, fifth and ninth punching positions. The twoelectromagnets at position B are particular to the punches at the secondand sixth punching positions. The two electromagnets at position C areparticular to the punches at the third and seventh punching positions,and the two electromagnets at position D are particular to the punchesat the fourth and eighth punching positions, of which the punch at thefourth position is the feed hole perforating punch. The second arms 25of the pairs of bell-cranks 23 at positions B, C and D areradially staggered with respect to the second arms of the three bellcranks atposition A, whilst the arms 22 of all bell-cranks 23 are arranged inalignment with respect to their associated link members such as 21. Thisarrangement of the bell-cranks 23 and electromagnets 26 permits the ninepunches to be pitched 0.l apart from each other in the line of punches.

It will readily be understood that each of the punches will be operatedindependently, and in the manner previously described for operation ofthe feed hole punch to effect a punching operation.

It is so arranged that if an electric current signal is applied to anyonev of the electromagnets particular to punches representative of theelements of a character then an electric current signal will also beapplied to the electromagnet particular to the feed hole perforatingpunch, thus a feed hole perforating operation will be effected only atsuch times that the elements or elements of a character are punched intothe tape. It is also arranged that an electric current signal can beapplied, if it is so desired, to the electromagnet particular to thefeed hole perforating punch if a blank space or blank spaces on the tapebetween character perforations is required when of course theotherpunches remain unoperated.

A tape feeding mechanism is operatively associated with the feed holepunching mechanism to effect feeding punching mechanism and the tapefeeding mechanism are linked by the provision of a second arm 36extending from the second arm 29. I

A tape feeding operation is performed between perforating operations,and the feed hole punch operating mechanism is linked to the mechanismof the tape feeding unit by a second arm 36 extending from the settingarm 29. The free end of the second arm 36 engages one arm 37 of a twoarmed lever 38 which is fixed to a spindle 41 pivotally supported in abearing (not shown) in the mounting plate 1. The other arm 39 of the twoarm lever 38 incorporates a bent portion 40 at one end thereof which isin close proximity to the end ofthe second arm 25 of the bell-crank 23particular to the operating mechanism for the feed hole punch.

The contribution of two arm lever 38 in effecting a tape feedingoperation as a result of a feed hole perforating operation is now to bedescribed with reference. to FIG. 4 and FIGS. 5 and 6 which show thetape feeding mechanism. a

FIG. 5 is a side elevation of one part of the tape feeding mechanismwhich is located behind the mounting plate 1 through which spindle 41(FIG. 4) extends.

Spindle 41 pivotally accommodates thereon and has affixed theretorespectively a lever 42 and another two armed lever 43. The lever 43 isbiassed to move in a continuously, with its periphery. Rollers 51 and 52are .mounted on arms 53 and 54 respectively of a cam follower 55, whichis pivotally mounted on a spindle 96 affixed to the mounting plate 1. Anextending arm 56 of the cam follower 55 is pivotally linked by a pin 57to one end of a lever 58. Lever 58 is in turn pivotally linked by a pin59 at its other end, to a pawl 60. The pawl 60 is biassed by a tensionspring 62, affixed at its ends to one end of the pawl 60 and to thelever 58, to cause a tongue at the other end of the pawl to engage withthe toothed periphery of a racket wheel 63. The ratchet wheel 63 isaflixed to a spindle 64 which extends through a bearing (not shown) inthe mounting plate 1. The spindle 64 also accommodates thereon and hasaflixed thereto behind the ratchet-wheel, a star-wheel 65 which isengaged, between teeth thereof, by a roller 66 rotatably mounted on oneend of a lever 67. Lever 67 is in turn pivotally mounted at its otherend, on a pin 68 afixed to the mounting plate 1. The roller 66 isbiassed to engage the star-wheel 65 by a tension spring 69 affixed atits ends to a pin 70 affixed to the mounting plate 1 and the lever 67. Atape-feed sprocket-wheel 61 is also accommodated on and affixed tospindle 64. The sprocket-wheel however is located on the front of themounting plate 1 as shown in FIGS. 1 to 3 and arranged to engage feedhole perforations in the tape made by the biassed to move to the rightabout the axes of pins 72 and 77 under the influence of a tension spring78 affixed at its ends to the pin 76 and to a pin 79 affixed to themounting plate 1. The other arm 75 of the forked lever 74 is arranged tobe engaged by the end of the arm 42 on spindle 41 when the two armedlever 43 is pivoted in an anti-clockwise direction by spindle 41.

FIG. 6 shows a side elevation of another part of the tape feedingmechanism. For the sake of clarity these two units have been shownseparately. In practice these pairs are mounted side by' side behind themounting plate 1 and share shafts 50 and 64 and pins 96 which are commonto both. Shaft 50, as well as accommodating thereon cam 49 f FIG.-5,also accommodates a cam 87. The profile of cam 87 is arranged to becontinuously engaged by rollers 88 and 89 on arms 90 and 91 respectivelyof a cam follower 92 which is pivotally mounted on the spindle 96affixed to the mounting plate 1. An extending arm 94 of the cam follower92 continuously engages one end 83 of a pawl lever 82 which is pivotallymounted on a pin 84 affixed to the mounting plate 1. The end :83 of thepawl lever 82 is biassed to engage continuously the extending arm 94 ofthe cam follower under the influence of a tension spring 85 which isaffixed at its ends to the pawl lever 82 and to a pin 86 afiixed to themounting plate 1. Pivoting of the pawl lever 82 about the axis of thepin 84 causes the tongue 81 of the pawl lever to be moved into orwithdrawn from the path of a second ratchet-wheel 8t) aflixed to theshaft 64.

The operation of the latterly described parts of the tape feeding unitare now to be described with reference to FIGS. 1, 3, 4, and 6. Feedingof the tape 20 (FIG. 1) by the sprocket-wheel 61 is only permitted whena feed hole perforating operation has been effected by the feed holepunching mechanism, and a feed hole perforating operation is onlyeffected when a character is performed in the tape 20. 7

Referring now to FIG. 5, the forked lever 74 and arm 71 form a togglejoint, and these two members are maintained substantially erected in thepositions shown by the end of a lever 42 engaging with the arm 75 of theforked lever 74. In this condition of arm 71 and forked lever 74, andwhen lever 58 is oscillated about the axis of the pin 72 by the actionof cam 49 and its follower 55, pivoting of lever 58 in a clockwisedirection during the first half cycle of oscillation causes the tongueof the pawl 60 to ride over a tooth of the ratchet-wheel 63, i.e.anticlockwise around the periphery of the ratchet-wheel 63. At thetermination of the first half cycle of oscillation the tongue of thepawl 60 is in positive engagement with the radial face of the tooth, sothat, during the next half cycle of oscillation of lever 58 in ananticlockwise direction, movement of the pawl tongue downwards causesthe ratchet-wheel 63 to rotate through one tooth position in theclockwise direction. Since sprocket-wheel 61 is afiixed to the shaft 64,as is ratchet-wheel 63, the sprocket-wheel rotates, andthroughengagement of its teeth with feed hole perforations in the tape,the tape is fed toward the punches of the punching mechanism betweenpunching operations.

It will be readily understood therefore that with the forked lever 74and arm 72 in the positions shown a tape feeding operation will beeffected for each complete cycle of oscillation of lever 58. When as islatter to be described, the end of lever 42 is moved out of engagementwith the arm 75 of the forked lever 74, the toggle joint formed bylevers 72 and 74 collapses under the tension applied to the levers byspring 78. Thisfcollapse causes forked lever 74 to pivot in a clockwisedirection about the axis of pin 77 and in doing so causes arm 71 topivot lever 58 about the axis of pin 57 in an anticlockwise direction.As a result, the left hand end of the lever 58 rests on a pin 93 afiixedto the mounting plate 1 and lever 58 is then oscillated under the actionof cam 49 and follower 55 about the point of engagement between thelever 58 and the pin 93 on which the lever rests. Thus no feeding actiontakes place. During this non-feeding oscillation of lever 58, the togglejoint formed by forked lever 74 and lever 71 is alternately erected andcollapsed until such time that the end of lever 42 is again brought intothe path of arm 75 of the forked lever 74 so as to engage it andmaintain the joint in an erected condition. As long as the joint ismaintained in the erected condition by arm 42 and lever 58 isoscillated, then tape feeding operations will be effected.

The decision as to whether, or not, a tape feeding operation is to beeffected is determined by the condition of an electromagnet at positionD (FIG. 4) which electromagnet is particular to the feed holeperforating punch.

The method of effecting a tape feeding operation is now to be describedwith reference to FIGS. 4 and *5. At this stage the end of lever 42(FIG. 5) is disposed in a position clear of the path of arm 75 of thetwo armed lever 74 and thus no tape feeding operations are effected.When the setting arm 29 (FIG. 4) is pivoted in a clockwise directionabout the axis of spindle 24 in the manner previously described withreference to thepunch operating mechanisms, all the arms 25 of thebell-cranks 23 are pivoted in the same direction to bring them incontact with the core of their respective electromagnet 26. As thesetting arm 29 pivots so does its second arm 36 the end of which,through its engagement with the arm 37 of the forked lever 38, causesthis lever and its other arm 39 to pivot in an anticlockwise directionto rotate shaft 41 to which it is aifixed. As this pivoting action takesplace the arm 39 of the two-armed lever 38 is moved out of the path ofthe arm 25 of the bell-crank 23 particular to the feed hole perforatingpunch. If, at the end of this pivoting movement, the electromagnet 26particular to the feed hole perforating punch is energised to effect afeed hole perforating operation then the arm 7 23 is retained in itspivoted position. When setting lever 29 with its second arm 36 ispivoted in a reverse direction, the two armed lever 38 is retained inits pivoted condition through the bent portion 40 on the arm 39 engagingwith the end of the retained arm 25 of the bell crank 23. This conditionof the arms 25 and 39 is shown in dotted lines. The pivoting of theshaft 41 by two armed lever 36, in an anticlockwise direction causes atwo armed lever 43 (FIG. on the other side of the mounting plate 1, topivot in the same direction. At the commencement of the pivotingmovement the forked lever 74 and arm 71 are in the collapsed conditionand lever 42, freely and pivotally arranged on shaft 41, has its freeend disposed with respect to the end of arm 75 of forked lever 74asshown in dotted lines. When the forked lever 74 and arm 71 are againerected during the oscillation of lever 58, the arm 75, of the forkedlever 74, is drawn leftward away from the end of lever '42 which leverthen pivotes in an anticlockwise direction to re-engage the bent portion48 of two armed lever 43 under the influence of tension spring 47. Thispivoting action of lever 42 then disposes its free end into the positionshown to engage the arm 75 of the forked lever 74. The toggle jointformed by levers, 71 and 74 is then prevented from collapsing and aslong as the electromagnet 26 at position D (FIG. 4) is energised tapefeeding operations Will be effected; one feeding operation beingeffected for each tape feed hole perforated in the tape. De-energisationof the electromagnet 26 at position D, particular to the feed holeperforating punch, will permit the arm 25 of the associated bell-crank23 to be returned to its rest position in an anticlockwise direction andunder the influence of its associated tension spring 27. This occurswhen setting arm 29 is subsequently pivoted in an anticlockwisedirection, under the action of its associated cam 6 (FIG. I) and tensionspring 33. When this pivoting of setting arm 29 takes place its secondarm 56 pivots in the same direction and permits two-armed lever 36,spindle 41, two-armed lever 43 (FIG. 5) and arm 42 to pivot in the samedirection under the influence of the tension spring 48 aflixed to themounting plate 1 and two armed lever 43. This pivoting action causes theend of lever 42 to move clear of arm 75 of forked lever 74, and cycliccollapse and erection of the toggle joint formed by levers 71 and 74 ispermitted whereupon tape feeding operations are terminated.

Each time a tape feeding operation is effected and the sprocket-wheel 61is rotated, the star-wheel 65 is likewise rotated since it is on thesame shaft 64. The star-wheel 65 is rotated against the influenceexerted on it by roller 66, on lever 67, which roller is maintained inengagement with the periphery of the star-wheel 65 by the action oftension spring 69 on the lever 67 pivotable on the pin 68; The action ofthe roller 66 resting between teeth of the star-wheel 65 after each tapefeeding operation assists in maintaining a correctness of pitch betweensucceeding feed holes perforated in the tape,and thus the pitch betweensuccessive characters perforated in the tape.-

' The action of the tension spring 85 (FIG. 6) and cam 87, by way of camfollower 92, on the pawl lever 82 is such that the pawl lever isoscillated about the axis of pin 84 to cause the tongue 81 of the pawlto be cyclically disposed into and withdrawn clear of the path of theteeth of the ratchet-wheel 89.

The tongue 81 is withdrawn from engagement with a tooth of the ratchetwheel 80 just before each tape feeding operation takes place, and isdisposed into the path of the teeth just before the termination of eachtape feeding operation to engage a succeeding tooth of theratchet-wheel. This arrests rotation of shaft 64 aftereach feedingoperation, prevents over-run of the tape, and reduces the spring tensionwhich would normally be required of tension spring 69 (FIG. 5) to locatethe roller 66 in effective contact with the star-wheel at thetermination of each of the tape feeding operations.

It will readily be understood that the perforating apparatus could beused for the perforation and feeding of card or the like, of long orshort length, used for the storage of information in the form of codeperforations.

' What we claim is:

1. Perforating apparatus for perforating a tape comprising: acontinuously driven cam; a cam follower in operative relationship withsaid cam, said cam follower oscillating continuously due to the movementof said cam; a plurality of punch operating members linked to said camfollower in a first position; means for causing desired ones of saidpunch operating members to assume a second position; a plurality ofpunches one for each punch operating member; means for mounting saidpunches for reciprocal movement into and out of the tape to beperforated so that punch operating members in said second positions willcause their associated punches to reciprocate and perforate said tape;tape feeding means for moving said tape through said mounting means;feed hole perforating means cooperating with said tape feed means toperforate feed holes in said tape; and means responsive to thepositioning of all said punch operating member in said first position tostop said tape feeding and said feed hole perforating means.

2. Tape perforating apparatus for perforating a tape moved between a dieand stripper comprising: a cam; means for continuously rotating saidcam; a cam follower in operative relationship with said cam, said camfollower oscillating continuously due to the movement of said cam, aplurality of punch operating members linked to said cam follower in afirst position, means for causing desired ones of said punch operatingmembers to assume a second position; a plurality of punches, eachassociated with one punch operating member and positioned in said die sothat movement of said punch operating members in said second positioncauses said punches to oscillate into and out of said stripper, meansfor stepping said tape through said die and stripper, means cooperatingwith said stepping means to perforate feed holes in said tape, and meansresponsive to the positioning of all said punch operating members insaid first position to stop said stepping means and said feed holeperforating means.

References Cited in the file of this patent UNITED STATES PATENTSKleinschmidt et al Dec. 19, 1961

1. PERFORATING APPARATUS FOR PERFORATING A TAPE COMPRISING: ACONTINUOUSLY DRIVEN CAM; A CAM FOLLOWER IN OPERATIVE RELATIONSHIP WITHSAID CAM, SAID CAM FOLLOWER OSCILLATING CONTINUOUSLY DUE TO THE MOVEMENTOF SAID CAM; A PLURALITY OF PUNCH OPERATING MEMBERS LINKED TO SAID CAMFOLLOWER IN A FIRST POSITION; MEANS FOR CAUSING DESIRED ONES OF SAIDPUNCH OPERATING MEMBERS TO ASSUME A SECOND POSITION; A PLURALITY OFPUNCHES ONE FOR EACH PUNCH OPERATING MEMBER; MEANS FOR MOUNTING SAIDPUNCHES FOR RECIPROCAL MOVEMENT INTO AND OUT OF THE TAPE TO BEPERFORATED SO THAT PUNCH OPERATING MEMBERS IN SAID SECOND POSITIONS WILLCAUSE THEIR ASSOCIATED PUNCHES TO RECIPROCATE AND PERFORATE SAID TAPE;TAPE FEEDING MEANS FOR MOVING SAID TAPE THROUGH SAID MOUNTING MEANS;FEED HOLE PERFORATING MEANS COOPERATING WITH SAID TAPE FEED MEANS TOPERFORATE FEED HOLES IN SAID TAPE; AND MEANS RESPONSIVE TO THEPOSITIONING OF ALL SAID PUNCH OPERATING MEMBER IN SAID FIRST POSITION TOSTOP SAID TAPE FEEDING AND SAID FEED HOLE PERFORATING MEANS.